package vip.specimen.system.shiro;

import org.apache.shiro.web.servlet.ShiroHttpServletRequest;
import org.apache.shiro.web.util.WebUtils;
import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import java.io.Serializable;

/**
 * *@Author: 余浪人
 * *@Date：2021/2/25 11:42
 * *@Email:yulangren520@Gmail.com
 * *@QQ:1368419640
 **/
public class ShiroSessionManager extends DefaultWebSessionManager {
    private static final String AUTHORIZATION = "Authorization";
    private static final String REFERENCED_SESSION_ID_SOURCE = "Stateless request";

    public ShiroSessionManager() {
        super();
    }

    @Override
    protected Serializable getSessionId(ServletRequest request, ServletResponse response) {
        String id = WebUtils.toHttp(request).getHeader(AUTHORIZATION);//如果请求头中有 Authorization 则其值为sessionId
        if (!(id == null || "".equals(id))) {
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_SOURCE, REFERENCED_SESSION_ID_SOURCE);
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID, id);
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_IS_VALID, Boolean.TRUE);
            return id;
        } else {
            //否则按默认规则从cookie取sessionId
            return super.getSessionId(request, response);
        }
    }
}
